Hi, I'm from Chile. I have a Chrysler Stratus (CIRRUS) 2.0 Liter 2000.
The mode switch works, and the resistors are within the parameters of the manual. The BCM catch the signal of the mode switch but doesn't send it to the Mode Door Actuator. I know that the best thing I have to do is change the BCM, but in my country is tough. I want to program an Arduino Nano to work in the same way as the BCM, but I need to know how this module work.
I'd appreciate it if someone would explain to me how this actuator works,
I need to know how the signals works and how the ground are distributed.
I attach an image of the wiring diagram.
What signals catch the MODE SWITCH SENSE?


Thanks.

 

Try these people. Building your own BCM is a waste of effort. The BCM controls many things, from the locks, to the instruments on the dashboard to the heater/AC to the interior lights, etc, etc.

https://moduleexperts.com/modules/chrysler-bcm-repair/